When we got this we found an article on Marinot glass stuffed into it. A well known "expert" suggested it might be Monart but we are pretty sure that is not the case. The shape is very distinctive so I hope someone can give me an authorative opinion. I can send further images to anyone who thinks they would be helpful It is not signed and base is ground smooth.

Loetz Schaumglas is the first one I think of, although the shape is a bit 50s for glass produced in the 1930s. On no account would I attribute this to Maurice Marinot, that is probably wishful thinking by the previous owner.

Having been pointed in the right direction by Ivo (many thanks) we hit our Hathe Cantze Loetz book and found the distinctive stretched top is identical to the one shown as vase 246. The strange thing is we have had a lot of Loetz through our hands but the article and then the "expert" opinion threw us from the obvious. Now if anyone would care to give us an opinion, the same top is shown as Vase 123 as being designed by Robert Holubetz, and being quite rare. Would anyone venture an opinion as to whether it is designed by Holubetz or by Prutscher or someone else, and possible value. BTW we have a Prutscher chandelier in our home with white moulded shades, are they likely Loetz?